[Openstack] Call to API very slow [Grizzly]

Peter Cheung mcheung63 at hotmail.com
Tue Jul 30 18:00:06 UTC 2013


your time seems pretty fast.

Thanksfrom Peter

Date: Thu, 25 Jul 2013 18:14:11 +0700
Subject: Re: [Openstack] Call to API very slow [Grizzly]
From: chu.ducminh at gmail.com
To: mcheung63 at hotmail.com
CC: openstack at lists.launchpad.net; openstack at lists.openstack.org

Check some more API (I run these command below from Controller node):
# time quantum subnet-list
(...have 4 subnet)
real    0m0.676s
user    0m0.196s
sys     0m0.020s

# time quantum router-list

(...have 1 router)
real    0m0.496s
user    0m0.164s
sys     0m0.052s

# time nova list --all_tenants=1
(...have 5 instances)
real    0m1.290s
user    0m0.308s
sys     0m0.040s


Compare with my old OpenStack deployment on weaker servers, it took 1/3 in times.



On Thu, Jul 25, 2013 at 5:43 PM, Peter Cheung <mcheung63 at hotmail.com> wrote:




I am having a problem about calling API speed is up and down, something need 0.1s, something it needs 3s

Thanksfrom Peter

Date: Thu, 25 Jul 2013 17:41:11 +0700
From: chu.ducminh at gmail.com

To: openstack at lists.launchpad.net; openstack at lists.openstack.org
Subject: [Openstack] Call to API very slow [Grizzly]


All operations in my Openstack dashboard very slow (compare to my old Openstack deployment)
Then i do some check on an instance:


$ time curl http://169.254.169.254/openstack

2012-08-10
2013-04-04
latest
real    0m5.605s
user    0m0.004s
sys    0m0.004s

5 seconds for a simple API query !??


in quantum-ns-metadata-proxyxxxx.log, i saw:
2013-07-25 17:17:09    DEBUG [quantum.agent.metadata.namespace_proxy] Request: GET /openstack HTTP/1.0


Accept: */*
Content-Type: text/plain
Host: 169.254.169.254
User-Agent: curl/7.22.0 (x86_64-pc-linux-gnu) libcurl/7.22.0 OpenSSL/1.0.1 zlib/1.2.3.4 libidn/1.23 librtmp/2.3

2013-07-25 17:17:14    DEBUG [quantum.agent.metadata.namespace_proxy] {'date': 'Thu, 25 Jul 2013 10:17:14 GMT', 'status': '200', 'content-length': '28', 'content-type': 'text/html; charset=UTF-8', 'content-location': u'http://169.254.169.254/openstack'}


2013-07-25 17:17:14    DEBUG [quantum.agent.metadata.namespace_proxy] 2012-08-10
2013-04-04
latest

I take a look at metadata-agent.log, and saw almost request/response finished @17:17:09


But the last finished @17:17:14
2013-07-25 17:17:14    DEBUG [quantum.agent.metadata.agent] {'date': 'Thu, 25 Jul 2013 10:17:14 GMT', 'status': '200', 'content-length': '28', 'content-type': 'text/html; charset=UTF-8', 'content-location': u'http://172.30.1.14:8775/openstack'}



I enabled slow query log on MySql, but can't find any slow query.

Do you know possible problems in this situation?
Thank you very much!





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